252168197 has 2 divisors, whose sum is σ = 252168198. Its totient is φ = 252168196.

The previous prime is 252168151. The next prime is 252168221. The reversal of 252168197 is 791861252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169885156 + 82283041 = 13034^2 + 9071^2 .

It is a cyclic number.

It is not a de Polignac number, because 252168197 - 2²² = 247973893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252168127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126084098 + 126084099.

It is an arithmetic number, because the mean of its divisors is an integer number (126084099).

Almost surely, 2^252168197 is an apocalyptic number.

It is an amenable number.

252168197 is a deficient number, since it is larger than the sum of its proper divisors (1).

252168197 is an equidigital number, since it uses as much as digits as its factorization.

252168197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 252168197 is about 15879.8046902347. The cubic root of 252168197 is about 631.7764566517.

The spelling of 252168197 in words is "two hundred fifty-two million, one hundred sixty-eight thousand, one hundred ninety-seven".